Hot-air heater



J. W. TOLLAND HOT AIR HEATER Filed May l. 1922 3 Sheets-Sheet 1 lll-Il 827m L mw fm Vm J- W- TOLLAND HOT A1B HEATER Filed may l 1922 Oct- 13,1925.

J. W. TOLLAND HOT AIR HEATER Filed May 1. 1922 3 Sheets-Sheet `:5

Patented Oct. 13, 1925.

UNITED STATES f PATENT OFFICE.

JOHN W. TOLLAND, or sT. LOUIS, MISSOURI, ASSIGNOR OF. ronny-FIVE ONE-HUN- POWERS, or NORMAN, OKLAHOMA.

DREDTHS To JOHN A. TALTY, OF sT. LOUIS, MISSOURI, AND ONE-FOURTH :ro FRED HOT-AIR HEATER.

To all whom t may concer/n.:

Be it known that I, JOHN W. TOLLAND, a citizen of `the United States, and resident of the city of St. Louis and State of Missouri, haveinvented certain new and useful Improvements in Hot-Air Heaters, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying dravw inofs, forming a part hereof. l Y lily invention relates to improvements in hot air heaters, and has for its primary object a heater in which a constant circulation of air is set up in each room. c

A further object is to construct a heater in which the cold and used air ofa room is taken from a point at the. iloor, reheated andl discharged into the upper portion of the room, whereby a constant circulation of air is created.

A still further object is to construct a heater wherein the air when taken rom'the room can be passed out through the furnace and fresh air substituted. j

A still further object is to' construct `alhot air kheater in which it is not necessary to place the heater in a cellar, and one which eliminates the use of hot air registers inthe floor or walls.

In the drawings,

Fig. 1` is a 'fragmental vertical sectional view of several rooms, showing my vdevice in position.. j

Fig. 2 is a t1'ac ;mental view taken on the line 2-2 of Fig. 1. r

Fig. 3 is a vertical front View of the heater with parts broken away and in section.

Fig. 4 is a section taken on .the line 4-4 of Fig. 3. c

Fig. 5 is a section taken on the line .5w-5 of Fig. 3. j

F ig; 6 is kavertical section of the heater with the casing removed.v

Fig. 7 is atop plan view of thesub-heater l made use of.

Fig. 8 is a vertical cross section taken on the line 8--8 of Fig. 7.

Fig. 9 is atop plan view of the base. Fig. 10 `fis a fragmental horizontal cross section of the suction pipes, showing the dampers located therein. y

1922.` Serial No. 557,699: l.

Fig. 11 is a perspective` View of one of pipes, taken on the In carrying out my invention, 14,15, and.

16 represent the rooms of a house, and 17 the attic. The rooms are divided by means of walls 18 and havefloors 19 and 20, and a ceiling 21. Within the room. 14 is placed the. heater which consists ofv a base 22 which is provided with legs 23 which support it at a predetermined distance above the Hoor 19. TheI underside of the base 22 is pro-y vided with a downwardly projecting flange 24 to which is secured an air chamber 25. Connected to this air chamber area plurality of air pipes 26, 27, 28, and 29. These air pipes are provided with openings 30, in which are located air gates. These air gates are provided with a solid portion 31, and a reticulated portion r32, V and are mounted in slides 33 secured to the interior of the air pipes. The air gatesare also {provided with a handle 34, by means of which they can be moved forward` and backward in the slides, so. as to open and close the openings 30. Formed integral with the base 22 is an ash pit 35. This vash pit is provided on its upper surface with a. projecting flange 36, into which the fire pot 37 of the furnace fits. The base 22 is also provided on its upper surface with a flange 38, around which the casing 39 fits'. `The ash pit 35 is also provided with a collar. 40, to which is fitted a pipe 41'. Mounted on the ireboX 37 is a casing 43, which is provided with an extension 44 for the admis sion of fuel. Formed integral with the casing 43 are a plurality of projecting fins 45. These ns are spaced apart and are for the purpose of permitting a more rapid radiaw tion of heat from the casing. This casing is also'provided with a flue 46 which projects through the casing 39, and to which is secured a pipe 47 tor conducting the `vertical section products of combustion into the chimney" 48. Mounted on the casing 43 is a casing v 49 which is closed at its top, with the eX- ception of an opening 50, and in this opening is located a. euh-heater, whichl consists of a cylindrical casting 51, open at its upper end. This upper end is provided with a flange 52V which rests-on the casing 49.. The sub-heater is valso'pi-'ovided with integrally formed ribs 53 which project inwardly and are for the purpose of radiating heat, as the sub-heater is located in the hottest partei-the'- furnace. The sub-heater is also provided with openings 54 to which air ducts 55 are secured. These airA ducts extend through the casing 49 and are provided with a projection 56 which catches a certain amount of air housing withinthe casing 39"and con ducts it into the" sub-heater. Mounted on the upper portion of the casing1v39 is a" top 5-'7 which leads to a pipe 58. Thisrpipe is in turn connectedto an' air pipe'59V ,extend ing alongJAY the ceilings oft the' roo-ms. The pipe 59`is also'provided'with openings 60, in which air gate-s' 31 are mountedj The construction and mounting of. thesevv air gates is `precisely thel samef as'v the air: gates mounted in the pipes' 26,l 27, 28 and 29'.' Secured within the casing 43 is water heater 61, to which pipes 62A and'f 63" are connected These pipes leading tothe hotV water tank 64. i

It will'be notedfrom the drawings that the pipe 29 `terminates in the room 14,'.- the pipe 27 in the room 15,`. the pipfe 28 in the room A16,l while the pipe 26'extends up?` ward'. through the ceiling 2144 and floor 2Q into the room 17. The pipes just referred toare preferably constructed.)rectangular in orm'andare designedto tak'e'the place oiy a base board `or a wa'slrboard-around a room. In other words, when my device-is installed, the 'unsightly pipes are done away with,l as the pipes used'by my device are ornamental. vin form 4anddo not detract' from the ap pearance ofthe room.

I. may if desired .eliminate the pipe 59 and allow the -hot'air to escape into the room or hall, andA enter the various rooms to be heated through the doors or transoms, or by meansoyentilators installed "in the'par` tition wallsbetween the rooms.

The circulationx olffair' ifs'accomplished as follows: l p

After the 'fre has beenbuilt. the air within the casing 39 becomesheated" and rises. This naturally. creates' a. suction in the pipes! 26, 27, 28, and29. By opening the air gates'L within: these pipes, air" is drawn into them from'theifloor of: the room, which airbecoming heated, also rises upward and continues to' draw air from the various rooms. Now lin the eventthe" pipe 59z is utilized, the` airV gatesV therein are opened and theheated air passes out through the reticulated'portions 32 into the rooms, and as itbec'omes chilled, descends,

where it is again drawn into the pipes along the floor. Then sweeping the room, the dampers 42 are lowered into the position indicated by dotted lines in Fig. 3, which closes-off the entrance of air int-o the air chamber. 25, and allows the air tov pass through the pipe 41 into the aslry pit 35, from where itV isV drawn upwardgintoz' the fire and then passes through the chimney. After. the dampers 42 have been again closed, the air enters the chamber 25 and passes upward through the openings formed in the base 22, which permits it to circulate around the `:['urnace proper.

It will be noted that the'sub-heater. is

hung in the upper portion' of the furnace and extends downward: therein'V so that it' receives heat directly from there. The air ductsy having the projection l'projectinto the passage way" 66 between. theV heater'l proper and the casing 39, catching'a' certain amount oi air when it rises, and conduct iti into the sub-heater where it is still moreV highly heated.

isgiven a greater amount of radiatingsur-` face. l may also formiins on the lire pot 37 and the section 49.

' It will-be noted" in connection with these fins that they are interrupted and stag' gered so'as to` retard thefi'ow oi" air and also bring it in contact. with' a greater amount of heated surface. f

My furnace can be constructed to utilize various kinds offuel", suchas' wood, coal, oil, and the like. Another, feature of my device is that a considerable` amount of saving fuel is accomplished by means ofY the ycirculation, since the `warm air doesY not haveto he forced `into vthe rooms, but is draw-rr therein Aby means .of the suction Y created through the pipesextending along theibor.

In the modified construction shown in Fig; 14, thel air chanlher 25is dividedI into a number ofcomp artine'itsV by means of partition walls 67. The number offcompartments' correspending"-tor the number of suotion pipes. Then this str'uc'tureiis'-utilized@ itis also'n'ecessa-ry tojdivide at least a-.portion oi"` the space 66" into" acorresponding numberof compartments.v

This construction is prefere-bie when; long suction .pipes are used, so that each pipejwill getan equal amount ofsuction, because if these separate compartments were *notipresent, there would" be a possibility' of the shorter pipes receiving more suction' than thelong pipe, andresulty in anunequalf heating of the rooms.

Having' fully described my invention, what I claimis: Y

A heater comprising a baseprovidedon Inl this way, the efficiency. of the heater is increasedl inasmuch as it'` its lower surface witha'lange, an air' chamber securedto said flange beneathk thebas'e, an ash-pit integral with said' base and* l0'- cated on the upper face thereof, a flange integral with said base surrounding and spaced apart from said ash-pit, a flange integral with the top of said ash-pit and surrounding the opening formed through said top, a fire pot supported on said ash-pit and Within said ilange, a hollow cylindrical casing mounted on said fire box, a cylindrical casing closed on its upper end formed on said first mentioned casing, a casing surrounding said ash-pit, fire box and lirst mentioned casings and spaced apart therefrom, said last mentioned casings being held in position on the base by the flange surrounding the, ash-pit, a bell shaped top located on said last mentioned casing, a pipe secured to said top, a second pipe connected to said first mentioned pipe, said second mentioned pipe extending into various rooms and being provided with a plurality of valve controlled openings, and a plurality of Valve controlled pipes connected to said air chainber for drawing air to certain rooms, Whereby a constant circulation of air is permitted.

In testimony whereof, I have signed my name to this specification.

JOHN W. TOLLAND. 

